CVE-2026-16461

Summary

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Affected Software

VendorProductVersion RangeStatus

Weaknesses

  • CWE-121: Stack-based Buffer Overflow

Workarounds

To mitigate this issue, avoid using the rpcinfo -s command against untrusted, attacker-controlled, or compromised rpcbind hosts. Restrict the use of the rpcinfo utility to trusted internal endpoints or secure test environments only.

References